This rather unique piece of Radiohead memorabilia was given out in 1997 as a promotional item, and it contains an 'OK Computer' screensaver for Windows 3.1 or 95 on 3.5 inch floppy. Rather appropriate advertising technique, wouldn't you say?

It's funny how quickly these promo disks became obsolete after the '90s, and now they get thrown in the trash, or the donation pile, more often than they're kept as a collectible. But, like any music memorabilia, they'll continue to go up in value, and will always be sought after by collectors.